Is this really "a recurring design problem"?

• In C++ it is, because C++ sucks (ditto Java)

• But in a better language, it's not a problem at all

• For example, Perl provides a universal solution:

        foreach $element (@collection) {
          ...
        }

• This fails in C++ because the type system is too weak

• Solutions with higher-order functions fail too

  • No anonymous functions or lexical closure

• Ditto Java

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Copyright © 2002 M. J. Dominus